The detailed mineralogical and microgeochemical characteristics of polymetallic nodules collected from the Interoceanmetal Joint Organization (IOM, Szczecin, Poland) claim area, Eastern Clarion-Clipperton Fracture Zone (CCFZ, Pacific) were described in this study. obtained data applied for delimitation nodule growth generations estimation ratios (back-stripping using Co-chronometer method). met...

Quaternary magnetic studies have provided the conceptual framework to bridge magnetic studies into ancient systems. In cases where environmental materials have been subjected to diagenetic alteration two questions come to mind: 1) What part of the magnetic signal is preserved in the rocks; and 2) can the preserved signal be used to infer/identify magnetic patterns that are characteristic of the...

Past variations in global sea-level reflect continental ice volume, a crucial factor for understanding the Earth’s climate system. The Caribbean coral Acropora palmata typically forms dense stands in very shallow water and therefore fossil samples mark past sea-level. Uranium-series methods are commonly used to establish a chronology for fossil coral reefs, but are compromised by post mortem di...

Microbial fossils preserved by early diagenetic chert provide a window into the Proterozoic biosphere, but seawater chemistry, microbial processes, and interactions between microbes environment that contributed to this preservation are not well constrained. Here, we use fossilization experiments explore processes preserve marine cyanobacterial biofilms precipitation of amorphous silica in mediu...

Conventionally, diagenesis has been studied by making qualitative morphological observations which have organised into complex classification schemes. Petrophysics, with its many quantitative measurements, now gives us the ability to quantify effects of type, degree and timing diagenetic process. The aim this paper is examine how different processes affect petrophysical properties carbonate roc...

Mn- micronodules and nodules of the Clarion-Clipperton zone (Pacific Ocean) are composed 10 Å 7 phyllomanganates, δ-MnO2. The Mn-micronodules built fine concentric growth layers three types (1, 2a, 2b) according to their Mn/Fe ratio Ni, Cu, Co content. Applying previously developped geochemical discrimination approaches we found that were diagenetic precipitates a result suboxic diagenesis, whe...

Measurements of natural cosmogenic Si (t1/2 ~ 140 years) in tropical deltaic sediments demonstrate for the first time that most Si is present in rapidly formed authigenic clays and not biogenic opaline silica (bSi). The burial of bSi in deltaic and continental margin sediments has likely been greatly underestimated because of diagenetic alteration of bSi to clay, little of which dissolves in th...

Polycyclic aromatic hydrocarbons (PAH) in lake sediments and nearby soils of two European high mountain regions, Pyrenees and Tatra, have been studied. Similar mixtures of parent PAH were observed in all cases, indicating predominance of airborne transported combustion products. Nevertheless, the composition of these atmospherically long-range transported PAH was better preserved in the superfi...